package cn.edu.scau.cmi.ema.controller.rest;

import org.springframework.stereotype.Controller;

import java.util.List;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.io.IOException;

import com.google.gson.Gson;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;


import cn.edu.scau.cmi.ema.base.CmiPagination;
import cn.edu.scau.cmi.ema.service.base.CmiPsonService;
import cn.edu.scau.cmi.ema.base.CmiEmaController;
import cn.edu.scau.cmi.ema.dao.*;
import cn.edu.scau.cmi.ema.domain.*;
import cn.edu.scau.cmi.ema.service.*;

import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletRequest;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.bind.WebDataBinder;

@Controller("ProductcodeRestController")
public class ProductcodeRestController extends CmiEmaController {

	/**
	 * Create a new Productcode entity
	 * 
	 */
	@RequestMapping(value = "/newProductcode", method = RequestMethod.POST)
	@ResponseBody
	public Object newProductcode(@RequestBody Productcode productcode) {
		productcodeService.saveProductcode(productcode);
		return JSONObject
				.parse(cmiPsonService.toJsonString(productcodeDAO.findProductcodeByPrimaryKey(productcode.getId()), 2));
	}

	@RequestMapping(value = "/restNewProductcode", method = RequestMethod.POST)
	@ResponseBody
	public Object restNewProductcode(@RequestBody String productcodeJson) {
		Productcode productcode = new Gson().fromJson(productcodeJson, Productcode.class);
		appendReferences(productcode);
		productcodeService.saveProductcode(productcode);
		return JSONObject
				.parse(cmiPsonService.toJsonString(productcodeDAO.findProductcodeByPrimaryKey(productcode.getId()), 2));
	}

	@RequestMapping(value = "/saveProductcode", method = RequestMethod.PUT)
	@ResponseBody
	public Productcode saveProductcode(@RequestBody Productcode productcode) {
		productcodeService.saveProductcode(productcode);
		return productcodeDAO.findProductcodeByPrimaryKey(productcode.getId());
	}

	@RequestMapping(value = "/restSaveProductcode", method = RequestMethod.PUT)
	@ResponseBody
	public Object restSaveProductcode(@RequestBody String productcodeJson) {
		Productcode productcode = new Gson().fromJson(productcodeJson, Productcode.class);
		appendReferences(productcode);
		CmiPsonService cmiPsonService = new CmiPsonService();
		productcodeService.saveProductcode(productcode);
		return JSONObject
				.parse(cmiPsonService.toJsonString(productcodeDAO.findProductcodeByPrimaryKey(productcode.getId()), 1));
	}

	@RequestMapping(value = "/restDeleteProductcode/{productcodeId}", method = RequestMethod.DELETE)
	@ResponseBody
	public void restDeleteProductcode(@PathVariable Integer productcodeId) {
		Productcode productcode = productcodeDAO.findProductcodeByPrimaryKey(productcodeId);
		productcodeService.deleteProductcode(productcode);
	}

	@RequestMapping(value = "/restConfirmDeleteProductcodes")
	@ResponseBody
	public Object restConfirmDeleteProductcodes(@RequestBody Set<Integer> deleteProductcodesIds) {
		Set<Productcode> deleteProductcodes = productcodeDAO.findProductcodesByIds(deleteProductcodesIds);
		Set<Productcode> referencedProductcodes = productcodeService.loadReferenceProductcodes(deleteProductcodes);
		deleteProductcodes.removeAll(referencedProductcodes);
		JSONObject jsonObject = new JSONObject();
		jsonObject.put("referencedEntitys", referencedProductcodes);
		jsonObject.put("deleteEntitys", deleteProductcodes);
		return JSONObject.parse(jsonObject.toJSONString());
	}

	@RequestMapping("/restDeleteProductcodes")
	@ResponseBody
	public Object restDeleteProductcodes(@RequestBody Set<Productcode> deleteProductcodes) {
		Iterator<Productcode> iterator = deleteProductcodes.iterator();
		while (iterator.hasNext()) {
			Productcode currentProductcode = iterator.next();
			productcodeService.deleteProductcode(currentProductcode);
		}
		JSONObject jsonObject = new JSONObject();
		jsonObject.put("url", "listProductcodes");
		return JSONObject.parse(jsonObject.toJSONString());
	}
	// loadself

	@RequestMapping(value = "/restLoadProductcode/{productcodeId}", method = RequestMethod.POST)
	@ResponseBody
	public Object restLoadProductcode(@PathVariable Integer productcodeId, @RequestBody CmiPagination cmiPagination) {
		CmiPsonService cmiPsonService = new CmiPsonService();
		return JSONObject.parse(
				cmiPsonService.toPsonString(productcodeDAO.findProductcodeByPrimaryKey(productcodeId), 2, cmiPagination));
	}
	// loadReferenceds
	// TODO loadReferencedsPson，这个方法有一些问题，待修复

	@RequestMapping(value = "/restLoadProductcodeFoods/{productcodeId}/foods/{relatedfoodId}", method = RequestMethod.POST)
	@ResponseBody
	public Object restLoadProductcodeFoods(@PathVariable Integer productcodeId, @PathVariable Integer relatedfoodId,
			@RequestBody CmiPagination cmiPagination) {
		Food food = foodDAO.findFoodByPrimaryKey(relatedfoodId, -1, -1);
		CmiPsonService cmiPsonService = new CmiPsonService();
		return JSONObject.parse(cmiPsonService.toPsonString(food, 2, cmiPagination));
	}

	public void appendReferences(Productcode productcode) {

		// 引用表不是纯联系表，引用数量大于或者等于2
		Set<Food> foodsForProductcode = new HashSet<>();
		for (Food food_Productcode : productcode.getFoodsForProductcode()) {
			foodsForProductcode.add(foodService.findFoodByPrimaryKey(food_Productcode.getId()));
		}
		productcode.setFoodsForProductcode(foodsForProductcode);
	}

	@RequestMapping(value = "/restGetProductcodeFoods/{productcodeId}/foods", method = RequestMethod.POST)
	@ResponseBody
	public Object restGetProductcodeFoods(@PathVariable Integer productcodeId,
			@RequestBody CmiPagination cmiPagination) {
		CmiPsonService cmiPsonService = new CmiPsonService();
		return JSONObject.parse(cmiPsonService.toPsonString(
				productcodeDAO.findProductcodeByPrimaryKey(productcodeId).getFoodsForProductcode(), 2, cmiPagination));
	}

	@RequestMapping(value = "/restListProductcodes", method = RequestMethod.GET)
	@ResponseBody
	public Object restListProductcodes() {
		return JSONObject.parse(cmiPsonService.toJsonString(productcodeService.loadProductcodes(), 2));
	}

	@RequestMapping(value = "/restListProductcodesPost", method = RequestMethod.POST)
	@ResponseBody
	public Object restListProductcodesPost(@RequestBody CmiPagination cmiPagination) {

		CmiPsonService cmiPsonService = new CmiPsonService();
		cmiPagination = productcodePaginationService.updateAppPagination(cmiPagination);
		int startResult = (cmiPagination.getCurrentPagination() - 1) * cmiPagination.getPaginationSize();

		Set<Productcode> productcodes = productcodeDAO.findAllProductcodes(startResult,
				cmiPagination.getPaginationSize());
		String productcodeString = cmiPsonService.toPsonString(productcodes, 2, cmiPagination);

		return JSONObject.parse(productcodeString);
	}

	@RequestMapping("/productcodeSelectBox")
	@ResponseBody
	public JSONObject productcodeSelectBox(@RequestParam(required = false) String searchTable,
			@RequestParam(required = false) Set<Integer> searchValue, // 杨宏宇2019-9-10：searchValue是在selectpage.js的616行定义，如果要修改searchValue的名称，1.可以修改在selectpage.js修改；2.可以
																		// @RequestParam(value="searchValue", required =
																		// false) Set<Integer> someName
			@RequestParam(required = false, defaultValue = "10") int paginationSize,
			@RequestParam(required = false, defaultValue = "1") int pageNumber,
			@RequestParam(value = "qWord[]", required = false) String queryword,
			@RequestParam(required = false) String selectItem) throws IOException {
		Set entitySet = null;
		Integer count = 0;

		// 初始化原始值

		if (searchValue != null) {
			switch (searchTable) {
			// 外键

			// 被引用键
			case "Food":
				entitySet = foodService.loadFoodsByIdSet(searchValue);
				break;
			}
			// 没有测试，深度需要多少？？？
			String jsonData = cmiPsonService.toJsonString(entitySet, 1);
			JSONArray jsonArray = new JSONArray();
			jsonArray = (JSONArray) JSON.parse((String) jsonData);

			JSONObject jsonObject = new JSONObject();
			jsonObject.put("list", jsonArray);
			jsonObject.put("totalRow", entitySet.size());
			return jsonObject;
		}

		// 不根据关键字进行搜索
		if (queryword == null || queryword.trim() == "") {
			switch (selectItem) {
			// 外键

			// 被引用键
			case "Food":
				entitySet = foodDAO.findAllFoods((pageNumber - 1) * paginationSize, paginationSize);
				count = foodService.countFoods();
				break;
			}
		} else {
			switch (selectItem) {
			// 外键

			// 被引用键
			case "Food":
				entitySet = foodDAO.findFoodByNameContaining(queryword, (pageNumber - 1) * paginationSize,
						paginationSize);
				count = foodService.countFoodsByName(queryword);
				break;
			}
		}
		/**
		 * 将Json数据转换成jsonArray形式，需要通过pson方式进行转换，然后再转换成JsonArray。因为存在懒加载
		 * 没有直接使用CmiPsonService中的fromJson方法是因为，fromJson方法会将int类型的直接转换成double类型的数据，这个问题还没有解决
		 */
		// 没有测试，深度需要多少？？？
		String jsonData = cmiPsonService.toJsonString(entitySet, 1);
		JSONArray jsonArray = new JSONArray();
		jsonArray = (JSONArray) JSON.parse((String) jsonData);

		JSONObject jsonObject = new JSONObject();
		jsonObject.put("list", jsonArray);
		jsonObject.put("paginationSize", paginationSize);
		jsonObject.put("pageNumber", pageNumber);
		jsonObject.put("totalRow", count);
		jsonObject.put("totalPaginations",
				count % paginationSize == 0 ? count / paginationSize : count / paginationSize + 1);
		return jsonObject;
	}
}
